package com.imoocdl.aspect;

import com.imoocdl.constanat.CookieConstant;
import com.imoocdl.constanat.RedisConstant;
import com.imoocdl.exception.SellerAuthorizeException;
import com.imoocdl.utils.CookieUtil;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;

/**
 * aop切面类
 * Created by pc on 2018/7/27.
 */
@Aspect
@Component
@Slf4j
public class SellerAuthorizeAspect {
    @Autowired
    private StringRedisTemplate redisTemplate;

    /**
     * 定义一个切入点
     * 同时排除SellerUserController
     */
    @Pointcut("execution(public * com.imoocdl.controller.Seller*.*(..))"
            +"&& !execution(public * com.imoocdl.controller.SellerUserController.*(..))")
    public void verify(){}

    /**
     * 在方法执行前使用该切点
     */
    @Before("verify()")
    public void doVerify(){
        //获取request
      ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        //查询cookie
        Cookie cookie = CookieUtil.get(request, CookieConstant.TOKEN);
        if(cookie == null){
            log.warn("[登录校验] Cookie中查不到token");
            throw new SellerAuthorizeException();
        }
        //去redis中查询
       String token =  redisTemplate.opsForValue().get(String.format(RedisConstant.TOKEN_PREFIX,cookie.getValue()));
        if(StringUtils.isEmpty(token)){
            log.warn("[登录校验] reids中查不到token");
            throw new SellerAuthorizeException();
        }
    }
}
